/* 头部 */
header {
    height: 66px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    border-bottom: 1px solid #aec7ec;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 99;
}

header .zc a {
    margin: 0 20px;
    color: #fff;
    display: inline-block;
    height: 66px;
    line-height: 66px;
    font-size: 14px;
}

header .zc a.on {
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    border-bottom: 2px solid #fff;
}

header .header-r a {
    display: inline-block;
    width: 58px;
    height: 26px;
    border: 1px solid;
    text-align: center;
    line-height: 26px;
    font-size: 12px;
    border-radius: 12px;
    color: #fff;
}

header .header-r a:nth-child(2) {
    background-color: #ed510a;
    color: #fff;
}

header .header-r a:hover {
    opacity: 0.5;
}

/* 尾部 */
.footer-top {
    display: flex;
    justify-content: space-between;
}

.footer-top .footer-left {
    display: flex;
}

.footer-top .footer-left dl {
    margin-right: 50px;
}

.footer-top .footer-left dl dt {
    margin: 40px 0;
    font-size: 16px;
    font-weight: bold;
    color: black;
}

.footer-top .footer-left dl dd {
    font-size: 14px;
    color: #d1d1d1;
    margin: 15px 0;
}

.footer-top .footer-right .p1 {
    margin-top: 40px;
    font-size: 16px;
    font-weight: bold;
    color: black;
    text-align: right;
}

.footer-top .footer-right .p2 {
    font-size: 14px;
    color: #d1d1d1;
    text-align: right;
    margin-top: 10px;
    margin-bottom: 30px;
}

.footer-top .footer-right img {
    width: 100px;
    height: 100px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;

}

.footer-bottom .footer-l img {
    margin-right: 5px;
}

.footer-bottom .footer-l span,
a {
    font-size: 14px;
    color: #d1d1d1;
}

.footer-bottom .footer-r span {
    font-size: 14px;
    color: #d1d1d1;
}


.nav{
    background-color: #f8f9fb;
}
.nav .black {
    background-color: black;
    height: 360px;
    width: 100%;
    margin-bottom: 180px;
}

.nav .main {
    background-color: #fff;
    width: 1210px;
    height: 290px;
    margin-top: -320px;
    margin-bottom: 90px;
    position: relative;
}

.nav .main .main-r {
    width: 580px;
    height: 290px;
}

.nav .main .main-nav {
    margin-left: 45px;
    width: 415px;
}

.nav .main .main-l {
    margin-top: 45px;
    margin-bottom: 25px;
}

.nav .main .main-nav h4 {
    margin-bottom: 22px;
    font-size: 24px;
}
.nav .main .main-nav p{
    font-size: 12px;
    line-height: 20px;
}
.nav .jieshao .help-des-icon{
    margin-bottom: 25px;
}
.nav .jieshao p{
    font-size: 12px;
    line-height: 22px;
    width: 1100px;
    margin-bottom: 30px;
}

.nav .jieshao .wei{
    text-align: right;
    width: 1100px;
    display: flex;
    flex-direction: row-reverse;
}
.nav .jieshao .wei .lan{
    width: 20px;
    height: 3px;
    background-color: blue;
    margin-top: 10px;
    margin-right: -1010px;
}
.nav .jieshao h4{
    font-size: 22px;
    margin-bottom: 45px;
}
.nav .jieshao .two{
    font-size: 14px;
}
.nav .jieshao .szyh-details{
    width: 1100px;
    height: 615px;
    margin-bottom: 55px;
}
.nav .jieshao .szyh-detail{
    width: 1100px;
    height: 10px;
    margin-bottom: 170px;
}